Masayo Ōsawa

Masayo Ōsawa (大沢 政代) was a Japanese diver. She competed at the 1936 Summer Olympics and finished sixth in the 3 m springboard and 14th in the 10 m platform competition. Her sister Reiko Ōsawa also competed at the 1936 Summer Olympics.

During World War II Ōsawa served in the Japanese Army as a nurse and died of an illness six months after the end of military operations in Northern China.